CVE-2025-30258 Information

Description

In GnuPG before 2.5.5 if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags the user loses the ability to verify signatures made from certain other signing keys aka a erification DoS.\

Reference

https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158 https://dev.gnupg.org/T7527 https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html